GaAs Transmitter

36.0-42.0 GHz GaAs Transmitter QFN, 7x7 mm October 2006 - Rev 19-Oct-06 U1006-QB Features Sub-harmonic, Image Reject Transmitter Integrated Mixer, LO Doubler/Buffer & Output Amplifier +17.0 dBm Output Third Order Intercept (OIP3) +2.0 dBm LO Drive Level 5.0 dB Conversion Gain 100% RF and DC Testing Mimix Broadband’s 36.0-42.0 GHz GaAs transmitter has a +17.0 dBm output third order intercept across the band. This device is a balanced, resistive pHEMT mixer followed by a distributed output amplifier and includes an integrated LO doubler and LO buffer amplifier. The use of integrated LO doubler and LO buffer amplifier makes the provision of the LO easier than for fundamental mixers at these frequencies. I and Q mixer inputs are provided and an external 90 degree hybrid is required to select the desired sideband. This device uses Mimix Broadband’s 0.15 µm GaAs PHEMT device model technology, and is based upon electron beam lithography to ensure high repeatability and uniformity. This device is well suited for Millimeter-wave Point-to-Point Radio, LMDS, SATCOM and VSAT applications. General Description Absolute Maximum Ratings Supply Voltage (Vd) Supply Current (Id) Gate Bias Voltage (Vg) Input Power (Pin) Storage Temperature (Tstg) Operating Temperature (Ta) Channel Temperature (Tch) ESD - Human Body Model ESD - Machine Body Model +6.0 VDC 350 mA +0.3 VDC +0.0 dBm -65 to +165 deg C -55 to MTTF Table1 MTTF Table1 Class 1A Class M1 Electrical Characteristics (Ambient Temperature T = 25o C) Parameter Frequency Range (RF) Upper Side Band Frequency Range (RF) Lower Side Band Frequency Range (LO) Frequency Range (IF) Output Return Loss RF (S22) Small Signal Conversion Gain IF/RF (S21) 2 LO Input Drive (PLO) Leakage @ RF Port LOx1 Leakage @ RF Port LOx2 Output Third Order Intercept (OIP3) 1,2 Drain Bias Voltage (Vd) Gate Bias Voltage (Vg1) Gate Bias Voltage (Vg2) Mixer, Doubler Dynamic Range Control (Vc) Supply Current (Id) (Vd=4.0V) Supply Current (Ic) Units GHz GHz GHz GHz dB dB dBm dBm dBm dBm VDC VDC VDC VDC mA mA Min. 36.0 36.0 16.0 DC -2.0 Typ. 10.0 5.0 +2.0 -25.0 -10.0 +17.0 +4.0 -0.4 -0.5 240 0.0 (1) Channel temperature affects a device’s MTTF. It is recommended to keep channel temperature as low as possible for maximum life Max. 42.0 42.0 26.0 4.0 0.0 - (1) Measured using constant current. (2) Measured using LO Input drive level of +2.0 dBm. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 1 of 8 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-42.0 GHz GaAs Transmitter QFN, 7x7 mm October 2006 - Rev 19-Oct-06 U1006-QB Transmitter Measurements XU1006-QB, USB Conv. Gain (dB) and Image Rejection (dBc) 10 5 CG (dB) and IR (dBc) CG (dB) and IR (dBc) 0 -5 -10 -15 -20 -25 36 37 38 39 40 41 42 RF USB (GHz) [IF=2 GHz] Conv Gain Image Rej 10 5 0 -5 -10 -15 -20 -25 36 37 38 39 40 41 42 RF LSB (GHz) [IF=2 GHz] Conv Gain Image Rej XU1006-QB, LSB Conv. Gain (dB) and Image Rejection (dBc) XU1006-QB, 1xLO to RF Leakage (dBm), P_LO=+2dBm 0 1xLO to RF Leakage (dBm) 2xLO to RF Leakage (dBm) -5 -10 -15 -20 -25 -30 17.0 0 -5 -10 -15 -20 -25 -30 17.0 XU1006-QB, 2xLO to RF Leakage (dBm), P_LO=+2dBm 17.5 18.0 18.5 19.0 19.5 20.0 20.5 17.5 18.0 18.5 19.0 19.5 20.0 20.5 LO (GHz) LO (GHz) 25 RFout-2xLO (dBc) vs. LO Freq P_LO=+2 dBm, IF_in=-10dBm XU1006-QB, Output IP3 (dBm) 20 18 20 RFout-2xLO (dBc) OIP3 (dBm) 16 14 15 12 10 8 6 10 5 4 2 USB LSB 36 37 38 39 RF (GHz) 40 41 42 0 17.0 0 17.5 18.0 18.5 19.0 LO Freq (GHz) 19.5 20.0 20.5 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 2 of 8 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-42.0 GHz GaAs Transmitter QFN, 7x7 mm October 2006 - Rev 19-Oct-06 U1006-QB Transmitter Measurements (cont.) XU1006-QB, Input IP3 (dBm) 18 16 14 12 IIP3 (dBm) 10 8 6 4 2 0 36 37 38 39 RF (GHz) 40 41 42 USB LSB CG (dB) and IIP3 (dBm) 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -2.0 -1.8 CG @ USB CG @ LSB IIP3 @ USB IIP3 @ LSB XU1006-QB, Conv Gain and IIP3 vs Vc (Dynamic Range) RF=38GHz, IF=2GHz, P_IF=-3dBm/tone -1.6 -1.4 -1.2 -1.0 Vc (V) -0.8 -0.6 -0.4 -0.2 0.0 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 3 of 8 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-42.0 GHz GaAs Transmitter QFN, 7x7 mm October 2006 - Rev 19-Oct-06 U1006-QB Physical Dimensions Functional Schematic VD 28 27 GND IF1 26 25 GND 24 23 22 Package Pin-out Table Pin Number 4 7 8 9 11 18 25 27 All other pins Pin Name RF Out VC VG1 VG2 IF2 LO IN IF1 VD1 GND Pin Function RF Out Gain Control LNA, LO Amp Mixer, Doubler IF2 Input LO Input IF1 Input Drain Bias Ground Nominal Value -2.0 to 0.0 -0.4 -0.5 +2.0 +4.0 Unit Volts volts volts dBm volts 1 2 GND RF OUT GND 3 4 5 6 VC 7 PA 21 20 19 Balanced Image Reject Mixer LO Buffer GND LO IN GND x2 18 17 16 15 8 VG1 9 10 11 IF2 12 GND 13 14 VG2 GND Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 4 of 8 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-42.0 GHz GaAs Transmitter QFN, 7x7 mm October 2006 - Rev 19-Oct-06 U1006-QB Recommended Layout Environmental MSL - Gross Test Leak Compliant Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 5 of 8 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-42.0 GHz GaAs Transmitter QFN, 7x7 mm October 2006 - Rev 19-Oct-06 U1006-QB App Note [1] Biasing - App Note [1] Biasing - The device is operated by biasing VD=4.0V with ID=240mA. Additionally, a mixer and doubler bias are also required with VG2=-0.5V. Adjusting Vg2 above or below this value can adversely affect conversion gain, image rejection and intercept point performance. The VC bias pin controls an integrated attenuator where VC=-1.3 V provides the minimum attenuation and VC = 0.0 V provides the maximum attenuation (approximately 25 dB). It is recommended to use active biasing to keep the currents constant as the RF power and temperature vary; this gives the most reproducible results. Depending on the supply voltage available and the power dissipation constraints, the bias circuit may be a single transistor or a low power operational amplifier, with a low value resistor in series with the drain supply used to sense the current. The gate of the pHEMT is controlled to maintain correct drain current and thus drain voltage. The typical gate voltage needed to do this is VG1= -0.4V. Typically the gate is protected with Silicon diodes to limit the applied voltage. Also, make sure to sequence the applied voltage to ensure negative gate bias is available before applying the positive drain supply. MTTF MTTF is calculated from accelerated life-time data of single devices and assumes an isothermal back-plate. XU1006-QB, MTTF (yrs) vs. Backplate Temperature (°C) 1.0E+05 1.0E+04 MTTF (Years) 1.0E+03 1.0E+02 1.0E+01 1.0E+00 55 65 75 Temperature (°C) 85 95 Bias Conditions: Vd=4.0V, Id=240 mA Typical Application RF OUT 37.0-39.5 GHz XP1005 XU1006-QB Coupler IF In 2 GHz Mixer X Buffer X2 LO(+2.0dBm) 17.5-18.75 GHz (USB Operation) 19.5-20.75 GHz (LSB Operation) Mimix Broadband MMIC-based 35.0-45.0 GHz Transmitter Block Diagram (Changing LO and IF frequencies as required allows design to operate as high as 42 GHz) Mimix Broadband's 36.0-42.0 GHz XU1006-QB GaAs Transmitter can be used in saturated radio applications and linear modulation schemes up to 128 QAM. The transmitter can be used in upper and lower sideband applications from 36.0-42.0 GHz. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 6 of 8 Characteristic Data and Specifications are subject to change without notice. ©2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-42.0 GHz GaAs Transmitter QFN, 7x7 mm October 2006 - Rev 19-Oct-06 U1006-QB App Note [3] USB/LSB Selection - LSB USB For Upper Side Band operation (USB): With IF1 and IF2 connected to the direct port (0º) and coupled port (90º) respectively as shown in the diagram, the USB signal will reside on the isolated port. The input port must be loaded with 50 ohms. IF2 IF1 An alternate method of Selection of USB or LSB: For Lower Side Band operation (LSB): With IF1 and IF2 connected t